Test Overview
Test Methodology

Inductively Coupled Plasma/Mass Spectrometry (ICP-MS)

Reference Range *

4- 6.4 mg/dL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday, Wednesday, Friday
Analytic Time

4 - 9 days

Soft Order Code
MiChart Code
Magnesium, RBC
  • RBC Magnesium
  • Magnesium, Erythrocytes
Reference Laboratory
Quest Valencia (#623)
Special Testing
Specimen Requirements
Collection Instructions

Royal blue (trace element) and/or Metal-Free aliquot tubes are available from MLabs (800-862-7284). Collect blood in a royal blue top (trace element) tube with EDTA (K2). Centrifuge and aliquot rbcs into a metal-free tube within 2 hours of collection (KEEP red blood cells). Refrigerate. Plasma can be discarded when aliquotting.

Special Handling

This test requires only red blood cells. Must be spun and aliquotted within 2 hours.

Normal Volume
0.5 mL packed RBC (plasma discarded)
Minimum Volume
0.3 mL packed RBC (plasma discarded)
Rejection Criteria
Frozen specimens
Additional Information

Test sent to Quest Valencia

CPT Code
Fee Code